Car-truck.



No. 865,493. PATENTED SEPT. 10, 1907.

H. S. HART.

GAR TRUCK.

APPLICATION FILED 1330.17. 1906.

2 SHEETSSHEET l.

No. 865,493. PATENTED SEPTx 10, 190?.

H. S.-HART.

CAR TRUCK.

APPLICATION FILED DEO.17. 1906.

z SHEETSSHEET 2.

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fave/@627? HARRY S. HART, OF CHICAGO, ILLINOIS.

GAR-TRUCK.

To all whom it may concern:

Be it knownl that I, HARRY S. HART, a .citizen of the United States; residing at Chicago, in the county ,of Cook and State of Illinoh, have invented certain new and useful Improvements Car-Trucks, of which the following is a specification.

The object of my invention is to provide a car truck in which thebolster may-be attached to the side frame of the truck, by means that will permit the use of an integral side frame, or, ita non integralside frame is used, will permit the removal of the bolster from the side frame without separating the parts'oi which the .latteris formed. K

My improved construction embodies means whereby the bolstermay be separated from the side frames without disarranging any of the other parts of the truck. v i

In the accompanying drawings-Figure 1 'is a side view of a truck constructed in accordance with my invention. Fig. 2 is an enlarged view of the central portion of the truck, partly shown in section. '3

- is a plan view of the structure: shown in Fig. 2, a part of the view being in section on the line 5 of Fig. 2.

As shown in Fig. 2 of the drawings, the upper part of the inner faces of the columnsd are recessedas shown at s. The continuity of the inner faces of the columns is maintained, however, by the removable members 0, which are of a form and size to fit the recesses referred to. The members 0. are removably secured in place by means of the keys 71.. As clearly appears from Fig. 3 of the drawings, the keys 'nvcoact with keyways located in the rear walls of the members yo and of the;recess, 8. These keyways are,continued I as Speciflcation of Letters Patent. I Application filsd December-17AM Patented Sept. 10,1907.

6. Serial No. 348,269.

bers o are thus caused to enter the recesses s in the upper portions of the columns. When the bolster has been adjusted to its" proper position-the keyways in the interlocking members 0 will register with the-keyways in the rear walls ofthe recesses s. The parts being in this position. the keys ri, are driven home through the aperturesm in the upper arch bar of the side frame. When theparts are assembled as described, the bolster 0 will be firmlysecu'red in place in the usual manner and will'bepermittedto move in a vertical direction upon the springs g, the inner surface of the interlocking members 0 being continutions of the columns d. V

While have illustrated I tion with a bolster of the usual. type'co-acting with ms with the inner integral surfaceof the lower poran interlocking member secured to the side frame by a single key, it will'be readilyunderstood that other specific forms of construction, come within the spirit of my invention. v

What Lclaim is: v. 1'. 'A side frame for a m truck' comprising columns relocking members being secured to the columns by means oi! keys. i 1

. 2. A side i'rame tor.-a truck having an opening to receive the end of the bolster;- the side' faces of said opening being recessed, removable interlocking members engaging said recesses, and keys hers to the side frame.

3. A side frame for a truck comprising columns spaced apart to' receive the end of a bolster, recesses in the inner faces of said columns at their upper ends, keyways in the 'walls of said recesses, removable members adapted to fit.

' HARRY S.,HA'R,T.'

Witnesses:

' W. A. Scam,

.lnsmn A MscEnwsnn.

my invention in connecmovable interlockingmeinbers,tor thebolster, said intersecuring saidlnterlocking mem- 

